<template>
  <view>
    <view class="search-box">
      <uni-search-bar @input="input" :radius="100" cancelButton="none"></uni-search-bar>
    </view>
    <view class="sugg-list" v-if="searchResults.length !== 0">
      <view class="sugg-item" v-for="(item, i) in searchResults" :key="i" @click="gotoDetail(item.goods_id)">
        <view class="goods-name">{{item.goods_name}}</view>
        <uni-icons type="arrowright" size="16"></uni-icons>
      </view>
    </view>
    <view class="history-box" v-else>
      <view class="history-title">
        <text>搜索历史</text>
        <uni-icons type="trash" size="17" @click="cleanHistory"></uni-icons>
      </view>
      <view class="history-list">
        <uni-tag :text="item" v-for="(item, i) in historys" :key="i" @click="gotoGoodsList(item)"></uni-tag>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
            timer: null,
            kw: '',
            searchResults: [],
            historyList: ['a', 'app', 'apple']
      };
    },
    methods: {
      input(e) {
          clearTimeout(this.timer)
          this.timer = setTimeout(() => {
            this.kw = e.value
            console.log(this.kw)
            this.getSearchList()
          }, 500)
      },
      async getSearchList() {
        if (this.kw === '') {
          this.searchResults = []
          return
        }
        const { data: res } = await uni.$http.get('/api/public/v1/goods/qsearch', { query: this.kw })
        if (res.meta.status !== 200) return uni.$showMsg()
        this.searchResults = res.message
        this.saveSearchHistory()
      },
      gotoDetail(goods_id) {
        uni.navigateTo({
          url: '/subpkg/goods_detail/goods_detail?goods_id=' + goods_id
        })
      },
      saveSearchHistory() {
            const set = new Set(this.historyList)
            set.delete(this.kw)
            set.add(this.kw)
            this.historyList = Array.from(set)
            uni.setStorageSync('kw', JSON.stringify(this.historyList))
        },
        onLoad() {
          this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
        },
        cleanHistory() {
          this.historyList = []
          uni.setStorageSync('kw', '[]')
        },
        gotoGoodsList(kw) {
          uni.navigateTo({
            url: '/subpkg/goods_list/goods_list?query=' + kw
          })
        },
    },
    computed: {
      historys() {
        return [...this.historyList].reverse()
      }
    }
  }
</script>

<style lang="scss">
.search-box {
  position: sticky;
  top: 0;
  z-index: 999;
}
.sugg-list {
  padding: 0 5px;

  .sugg-item {
    font-size: 12px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    display: flex;
    align-items: center;
    justify-content: space-between;

    .goods-name {
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      margin-right: 3px;
    }
  }
}
.history-box {
  padding: 0 5px;

  .history-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 40px;
    font-size: 13px;
    border-bottom: 1px solid #efefef;
  }

  .history-list {
    display: flex;
    flex-wrap: wrap;

    .uni-tag {
      margin-top: 5px;
      margin-right: 5px;
    }
  }
}

</style>
